Geologic Map of the Bartlett Dam Quadrangle and southern part of the Horseshoe Dam Quadrangle, Maricopa County, Arizona v.2

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Author
Skotnicki, S.J.
Issue Date
2024
Keywords
basin fill
dam
Flood control
granite
Needle Rock Formation
recreation
volcanics
Water conservation
Proterozoic
tertiary

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Citation
Skotnicki, S.J., 2024, Geologic Map of the Bartlett Dam Quadrangle and southern part of the Horseshoe Dam Quadrangle, Maricopa County, Arizona v.2. Arizona Geological Survey Digital Geologic Map, DGM-218, 22 p., 1 map, map scale 1:24,000.
Publisher
Arizona Geological Survey (Tucson, AZ)
Description
This map and report summarize the geology of the northern part of the lower Verde River Valley in central Arizona. The map encompasses the Bartlett Dam 7.5' U.S.G.S. topographic quadrangle and the southern part of the Horseshoe Dam 7.5' US.G.S. topographic quadrangles (see Figure 1). The study area is on the northeast fringe of the Phoenix metropolitan area due east of Cave Creek and approximately 50 kilometers northeast of downtown Phoenix. The eastern side the study area includes Bartlett Dam, the western two-thirds of Bartlett Reservoir, and part of the Verde River. The center of the study area includes the volcanic hills of Brushy Mountain and overlying dissected basin-fill deposits. Late Tertiary basin-fill stratigraphy is well-exposed in the southeastern corner of the map. Most of the northern part of the study area is underlain by coarse-grained K-feldspar porphyritic granite which has been eroded into a well-developed pediment south of the drainage divide (see Figure 2).
URI
http://hdl.handle.net/10150/675634
Additional Links
https://library.azgs.arizona.edu/
Language
en
Series/Report no.
DGM-218
Rights
Arizona Geological Survey. All rights reserved.
Collection Information
Documents in the AZGS Documents Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.
North Bounding Coordinate
33.9166
South Bounding Coordinate
33.75
West Bounding Coordinate
-111.75
East Bounding Coordinate
-111.625
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